摘要
针对光学变换加密系统的密匙安全管理和分发问题,提出了基于公匙密匙分配体制和光学变换的混合加密系统.首先利用光学加密系统对原始图像进行加密,然后对光学加密系统的工作密匙进行压缩,最后利用公匙密匙分配体制对压缩后的密匙进行分配和管理.解密时,接收方不需要等待,就可以预先利用公匙密匙分配体制获得解密密匙.理论分析和仿真实验表明,该方法不仅充分利用了光学变换加密系统具有多重密匙的特点,解决了密匙的安全分配和管理问题,而且突出了混合加密系统的速度优势.
A hybrid encryption in the optical transform domain based on public key distribution system is proposed aiming at safely deliver and management of optical encrypted system.Frist,the original image is encrypted based on optical system,and then,the work key of optical system is compressed,finally,distribution and management of the compressed key is dong by public key distribution system.In the decryption stages,the receiver do not need to wait and can obtain dencryption key in advance by means of public key distribution system.The theoretical analysis and computer simulation results show that the proposed method can solve the problem of safely deliver and management and make good use of multi-dimensional keys that encrypted system of optical transform possess.Also,this method highlight advantage of hybrid system speed.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2010年第7期1263-1267,共5页
Acta Photonica Sinica
基金
湖南省教育厅科研项目(07C506)
怀化学院科研项目资助
关键词
信息光学
图像加密
公匙密匙分配体制
光学变换
Information optics
Image encryption
Public key distribution system
Optical transform
